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AT76C901 Fiches technique(PDF) 2 Page - ATMEL Corporation

No de pièce AT76C901
Description  Wireless VoIP Phone-based on the 802.11 Standard Processor AT76C901 Summary
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Fabricant  ATMEL [ATMEL Corporation]
Site Internet  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT76C901 Fiches technique(HTML) 2 Page - ATMEL Corporation

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AT76C901
1652AS–VoIP–06/04
Description
The AT76C901 is highly integrated ASIC that can be used as a part of a wireless phone
that utilizes an 802.11 LAN-based wireless medium and carries Voice over IP (VoIP)
packets. Specified in this datasheet, an ARM® processor-based subsystem (Baseband
Controller) performs most of the PLCP and low MAC functions defined in 802.11. A
DSP, a Codec, and support circuitry perform the encoder function and interfacing to an
external baseband processor for a DSSS system. An interrupt controller and multiple
support peripherals are also included.
Applications
The VoIP baseband device is intended to be used in a wireless phone which operates
by encapsulating voice data within IP frames and transmitting the frames over a conten-
tion-based wireless medium. Specifically, the first application of the device is targeted at
a wireless phone operating on an 802.11 wireless LAN at 2.4 GHz. Figure 1 shows an
example of the device being utilized in a wireless phone.
Assumptions
The AT76C901 device can be used in a wireless phone powered by battery cells. The
device does not incorporate any access point type features, such as antenna diversity or
Ethernet interfaces.


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